Etymology

equilateral

E1Q10U1I1L1A1T1E1R1A1L1

Today it means: Having all the sides equal. Full definition →

English lateral ← Latin aequi- ← Old Latin aiquos
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Proto-Italic*aikʷos?
  2. Old Latinaiquos
  3. Latinaequus
  4. Latinaequi-
  5. Englishequi-
  6. Englishlateral
  7. English todayequilateral

From equi- + lateral.

Etymology from Wiktionary, CC BY-SA 4.0.